realschule-tettnang.de

Valid Email Server
Domain Lookup › realschule-tettnang.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
realschule-tettnang.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-04 18:23:24 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • dedivirt4817.your-server.de

MX Priorities

  • dedivirt4817.your-server.de: 10

A / AAAA Records

  • 91.233.87.104 ↩ www.orange-q.de

Mail Server IPs

  • 195.201.0.243 ↩ dedivirt4817.your-server.de
  • 2a01:4f8:1c1e:fb46::2 ↩ dedivirt4817.your-server.de

SOA Record

Raw SOA hydrogen.ns.hetzner.com hostmaster.realschule-tettnang.de 2026032001 86400 10800 3600000 3600
Primary NS (mname)
hydrogen.ns.hetzner.com
Admin Email (rname)
hostmaster@realschule-tettnang.de
Serial
2026032001
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
3600s

Nameservers (NS)

helium.ns.hetzner.de
hydrogen.ns.hetzner.com
oxygen.ns.hetzner.com

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:217.24.192.0/20 ip4:212.62.194.0/24 ip4:212.62.212.0/24 ip6:2a02:590:1::/48 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;sp=none;pct=50;adkim=r;aspf=r;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
⚠ Policy applies to 50% of failing messages only

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • MS=ms16455800
  • SPFv=spf1 mx ip4:217.24.192.0/20 ip4:212.62.194.0/24 ip4:212.62.212.0/24 ip6:2a02:590:1::/48 -all
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for realschule-tettnang.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits